IBM Support

Guardium 64-bit low disk space due to MySQL undo files

Troubleshooting


Problem

IBM Security Guardium units can enter a state where a significant fraction of the disk space on the /var partition is consumed by /../mysql/undo001 or similar files. This technote explains why this condition occurs, how to prevent it and how to recover from it.

Symptom

You might first notice this condition when running a health check before upgrading.


9997 admin Health Check for GPU and Upgrade
WARNING: DB is more than 50% full.

The condition is visible from CLI if you run "support show large"

/var/lib/mysql/TURBINE/GDM_SECURE_PARAMS.ibd: 2.7G
/var/lib/mysql/TURBINE/GDM_CONSTRUCT_INSTANCE.ibd: 736M
/var/lib/mysql/ib_logfile2: 4.0G
/var/lib/mysql/undo/undo001: 136G
/var/lib/mysql/undo/undo002: 46G

[{"Line of Business":{"code":"LOB76","label":"Data Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSMPHH","label":"IBM Security Guardium"},"ARM Category":[{"code":"a8m0z000000Gp0PAAS","label":"DATABASE"}],"ARM Case Number":"","Platform":[{"code":"PF004","label":"Appliance"}],"Version":"All Version(s)"}]

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Document Information

Modified date:
27 March 2024

UID

swg22000970

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